Magnetic field induced phase transitions in spin ladders with ferromagnetic legs
Strongly Correlated Electrons
2009-11-10 v1
Abstract
We study the phase diagram of spin ladders with ferromagnetic legs under the influence of a symmetry breaking magnetic field in the weak coupling effective field theory by bosonization. For antiferromagnetic interleg coupling we identify two phase transitions introduced by the external magnetic field. In order to establish the universality of the phases we supplement the bosonization approach by results from a strong coupling (rung) expansion and from spin wave analysis.
Cite
@article{arxiv.cond-mat/0401301,
title = {Magnetic field induced phase transitions in spin ladders with ferromagnetic legs},
author = {T. Vekua and G. I. Japaridze and H. -J. Mikeska},
journal= {arXiv preprint arXiv:cond-mat/0401301},
year = {2009}
}
Comments
7 revtex pages, 6 figures